Conveyer belt



Nov. 3, 1931. F., N, WOODMAN l 1,829,773

CONVEYER BELT Filed May 15, 1930 MWWM y v Patented Novp.r3j,` 1931" Lazamf Y ,-.my improved chain;

- STATES rRANcIsN. woonrfremor CLINTON, Massacrrusnzrrr:sy` f coNvEYnn' anni:

n Application niea'rrayli, 19730. seiaiirfisazea.

This invention relates toa belt fortrans. porting loose material and lis particularly designed for use inherit-treatment operations.4

a It is the generalobject of my invention kto provide anrimproved conveyor belt formed in part o-f sheet metal plates andfso. constructedV that permanent flexibility at` the joints is assured. Y

lo A vfurther object is to'k provide a belt which Y is'particularly adapted to the transportation Y of small parts or fine or granular material.

' A particular feature of the invention re- I lates to the provision of an improved typey of'- 15 hinge V`joint between the sheet metal plates VVofthe chain.

,My yinvention further relates to arrangements and combinations ofparts whichwill be hereinafter described and .moreI particujV y larly pointed out inthe appended claims.k

.n v A preferred forniof thefinvention isshown inthe drawings, in which Fig. l is a side elevation of a portion of f Fig. 2 is a partialplan view thereof; l

Y Fig. 3 is a detail sectional View, taken i along the Vline 3 3 inl Fig. 2,;

Fig. is a sectional elevation of va modification; Aand f Fig. 5 is a partial planfview, vlooking in the direction of the arrow 5 in Fig. 4f. n Referring particularlyto Figs. l, 2 and-3,

my improved conveyer belt comprises sheet Vmetal plates 10 which may be formed with side anges 12 to assist in retaining the material to be transported. For many purposes, however, the belt is'satisfactory with the flanges l2 omitted. Y The belt is commonly mounted onv driving n pulleys or guide pulleys having the polyan-l gular construction indicated at 2O in Fig. l,

the'length of each face of the pulley being equal to the'distance between jointsof the belt.

.f NEach sheet metal plate 10 is provided with' a series of perforations'22 adjacentits end edges. Preferably, projecting end portions 24 (Fig.` 3) outside of theperforations 22 are yrolled upjaround cr,oss-pins-25 to provide strongreenforcements at theV ends of they plates; y V, .n n I Y* ,H y

Spiral wire membersSO are provided,the* pltchof which corresponds to the spacing ofv the perforations 22. In the drawings I have shown two of these members() interlaced totions 22. If have also shown areenforcing cross-pin Y32 inserted in and between the coils of the spiral members 3 0. ends of the members '30 maybe. bentover, as indicated c in'ldllg. 2, to prevent displacement. of. the

spiral members and the cross-pin 32 ,may be similarlybent over ,to i y as indicated atBL v 4 In assemblingmy improved belt, the spiral prevent displacement,

Vmembers are preferably. inserted andjinter-l 30,'fpro'vi`de an excellentfhinge joint between.

the platesllO and thattliis hinge j oint'is permanently iiezible, even ywhen thebelt is operated continuouslyuunder hightemperaturel i conditions. The cross-pins .32, while not ab*- solutelynecessary, are `-very desirable, 'asthey prevent thebottoming of the' adjacent coils on each other Aand also reduce any tendency of the coils to contract transversely of the belt under tension. The reenforced ends of the plates 10 prevent the coils 30 from tearing out of the perforations 22.

The spiral hinge members prevent any possibility of the belt freezing or refusing to bend at the joints, as has been experienced with certain previous types of joints.

If the belt is to be used for transporting small parts or fine material which might siftl between 'the ends of the plates l0, I provide vwelded or otherwise secured to the outer face of each member 10 near the leading end thereof. The cover plates extend over the joints and into close engagement with the next pre-V Q53, cover Dlates 40 (Figs. i and 5) which may be j f .Tco

' Y ceding plates,` as indiceted at therglit in j When-the belt tnrnsan'engle, as indicated at theletin Fig; 4, tl1ecoi1ei1 platell() con- 5 tinuesto protect the jointwhile the precede Aing plate 10 swings downwardaway from tlle 'Y f plate fill,"ltlfius'V discharging; any material lodged'llld p lfitem ,L v ,It Will be understood tht the side'flanges`- K' 10 12 .a.nd the cover'platesAO, as Well as'the 'reenforcingrodsf32,1 mzty'ell-befomittedlinden certaincondtionsof opera-tion andwhenever u] theiiuse isnot considered lnece'sserymFui'-, i ii thcrnioie,whilelhave shown onlytwo spiral, j glgmembers 30 'forming-eacli"lexiblevjoint,A it.k

s,YK irallv embers maybe increased if fennel-def,-` .Sl'ablQ-MlQ-ffrj Having ,thus describedy myV invention and l 20 the-advantages thereofil 'd0 IIOG W'ShtO be' lzicedy through: Vseid, perforations and .,inter- 1 y laced with each othenwhereby'seid plgites` 30` said plates` iitside of said perforationsibeing rolled about re'enforcing' rode toetrengjthen f r the end edges and i'eestzthe pnll of thejspiral 2.1 Aaconveyeiz belt formed ofsheet metall` A 3 5,k vplates( per-f() 1sited'zidjacenttheir end edges',` a1- pairjofspiel v.Wire COil, Y; one otsaid coilsv being -'tl1i'eade d, inthe v perforations of each platefland Said coils overlappi-ngalongtheir N adjacent .fidej portions, Yand morose rod eX-f 4,-@ tendzngithrough the; Overlapping? Sid@ 'Polftions' ofj both WireV `"coils .l and y.positioned between-said ioverlapping portions', and seid coil'sendlrodfoifniinge permanently flexible',V 1

connection between said Slieetnietal plates. Y "l y 45V Inf'ftestimoy. wheneofvl Y.hswef hereunto 4 Y qixedniysignetrei'" Y l Y f 

